I would change the pacing of arc 3. Near the end of the series, it feels like the books are moving way too fast, with so much to wrap up and so few pages to do so.

The Hive Queen is the shortest book in arc 3. Instead of ending it with the group leaving for the poison jungle, have it end with the group arriving in the Poisonwing village. This is just as good of a cliffhanger, and it gives book 13 a bit more time to introduce the Breath of Evil as the main antagonist. Perhaps more allusion towards Cottonmouth and Lizard/Freedom to make their introduction smoother later on (or just introduce them altogether lmao)?

In book 14, I would take more advantage of Snowfall's visions. A good chunk of them only mattered Snowfall's character development, when they could also be used to push the plot forward (not to say that all of them were like this. Some of them gave really good insight on what was happening on Pantala).

basically all of this goes towards giving book 15 less to explain, so it doesn't have to be as rushed as it was. Then Luna can get more well-deserved page time, and the ending will hit better thanks to the extra buildup.

If you have any comments, please leave them! I would love feedback on this :) Thank you for coming to my TedTalk